Règne :
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Animalia
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Embranchement :
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Chordata
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Classe :
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Elasmobranchii
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Ordre :
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Rajiformes
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Famille :
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Rajidae
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Genre :
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Rostroraja
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Espèce :
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alba
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Nom Français : |
Raie blanche
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Nom Vernaculaire : |
White skate
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Description :
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snout very long and pointed, its tip pronounced; disc broadly rhombic, the outer corners acute, the front margins concave. Upper surface smooth in juveniles, almost spinulose with bare patches on wings in larger specimens. A thorn in front of and behind eye in young, more but smaller thorns with growth; in general, none on nape, shoulder region and back, but about 15 thorns in a median row on tail, rarely reaching to hind part of body, one thorn between dorsal fins; usually a row of strong thorns on either side of lower edge of tail; underside smooth in juveniles except for snout and front margins, more or less prickly in adults (including tail) except for bare areas on outer part of wings. Colour: upper surface reddish-brown (mainly in young) to greyish-blue, with numerous more or less distinct light spots; underside white with dark margins to pectoral and pelvic fins, particularly in young, tail dusky. Size: to about 200 cm TL.
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Auteurs & dates :
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Rostroraja alba (Lacepède, 1803)
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Recherche des images :
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Photo
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